Results 51 to 60 of about 49,144 (342)

Speckle-tracking echocardiography elucidates the effect of pacing site on left ventricular synchronization in the normal and infarcted rat myocardium.

PLoS ONE, 2014
BackgroundRight ventricular (RV) pacing generates regional disparities in electrical activation and mechanical function (ventricular dyssynchrony). In contrast, left ventricular (LV) or biventricular (BIV) pacing can improve cardiac efficiency in the ...
Michal Mor, Wesam Mulla, Sigal Elyagon, Hovav Gabay, Shani Dror, Yoram Etzion, Noah Liel-Cohen   +6 more
doaj   +1 more source

Clinical Outcomes in Patients With Left Bundle Branch Area Pacing vs. Right Ventricular Pacing for Atrioventricular Block

Frontiers in Cardiovascular Medicine, 2021
Background: Left bundle branch area pacing (LBBAP) is a novel pacing modality with stable pacing parameters and a narrow-paced QRS duration. We compared heart failure (HF) hospitalization events and echocardiographic measures between LBBAP and right ...
Xiaofei Li, Junmeng Zhang, Chunguang Qiu, Zhao Wang, Hui Li, Kunjing Pang, Yan Yao, Zhimin Liu, Ruiqin Xie, Yangxin Chen, Yongquan Wu, Xiaohan Fan   +11 more
doaj   +1 more source

Why Pacing Frequency Affects the Production of Early Afterdepolarizations in Cardiomyocytes: An Explanation Revealed by Slow/Fast Analysis of a Minimal Model [PDF]

Phys. Rev. E 99, 052205 (2019), 2019
Early afterdepolarizations (EADs) are pathological voltage oscillations in cardiomyocytes that have been observed in response to a number of pharmacological agents and disease conditions. EADs are small voltage fluctuations that occur during the plateau of an action potential.
arxiv   +1 more source

Advances in Symbiotic Bioabsorbable Devices

Advanced Science, EarlyView.
This review focuses on recent advances in bioabsorbable devices. This review concludes innovation at the material, device, and system levels, the significant advances toward biomedical applications. This review discusses and highlights the challenges and trends in symbiotic bioresorbable electronics, and provides a new direction for the development of ...
Chang Zhu, Engui Wang, Zhou Li, Han Ouyang   +3 more
wiley   +1 more source

Ultra‐high‐density mapping to guide effective His‐bundle pacing

Clinical Case Reports, 2021
Permanent His bundle pacing is a physiological alternative to right ventricular pacing, resulting in a lower probability of pacing‐induced cardiomyopathy and left ventricular ejection fraction deterioration. The combined use of UHD mapping systems allows
Gregorio Covino, Paolo Liberato Magliano, Filomena Colimodio, Claudia Auricchio, Ciro Provvisiero, Mario Volpicelli   +5 more
doaj   +1 more source

Higher ventricular rate during atrial fibrillation relates to increased cerebral hypoperfusions and hypertensive events [PDF]

Scientific Reports, 9: 3779, 2019, 2019
Atrial fibrillation (AF) is associated with cognitive impairment/dementia, independently of clinical cerebrovascular events (stroke/TIA). One of the plausible mechanisms is the occurrence of AF-induced transient critical hemodynamic events; however, it is presently unknown, if ventricular response rate during AF may impact on cerebral hemodynamics.
arxiv   +1 more source

Transoesophageal left ventricular pacing in heart failure patients with permanent right ventricular pacing [PDF]

Europace, 2005
Previous studies of biventricular (BV) pacing for treatment of heart failure (HF) patients with left bundle branch block (LBBB) evaluated responders to BV pacing with acute transvenous left ventricular (LV) pacing and arterial pulse pressure (PP). The aim of this study was to assess transoesophageal LV pacing in evaluation of the haemodynamic response ...
Gero Schwarz, Hans R. Figulla, H. Kühnert, G. Dannberg, Ralf Surber, Matthias Heinke   +5 more
openaire   +3 more sources

P21‐Activated Kinase 2 as a Novel Target for Ventricular Tachyarrhythmias Associated with Cardiac Adrenergic Stress and Hypertrophy

Advanced Science, EarlyView.
Ca2+/calmodulin‐dependent kinase II (CaMKII) activation is likely driven by oxidative stress, particularly excessive reactive oxygen species (ROS) production. This study identifies P21‐activated kinase 2 (Pak2) as a novel regulator of ROS‐induced CaMKII activation and abnormal Ca2⁺ dynamics in acute adrenergic and chronic pressure‐overload stressed ...
Tao Li, Ting Liu, Yan Wang, Yangpeng Li, Leiying Liu, James Bae, Yu He, Xian Luo, Zhu Liu, Tangting Chen, Xianhong Ou, Dan Zhang, Huan Lan, Juyi Wan, Yan Wei, Fang Zhao, Xin Wang, Tao Li, Christopher L.‐H. Huang, Chunxiang Zhang, Ming Lei, Xiaoqiu Tan   +21 more
wiley   +1 more source

Implantable Self‐Powered Systems for Electrical Stimulation Medical Devices

Advanced Science, EarlyView.
In this paper, the design strategy and clinical application of ISS are discussed in depth from four aspects: the design and optimization of the energy collection module, the selection and preparation of adaptive electrode materials, the innovation of system design strategy, and the biological effect of electrical stimulation of ISS.
Xi Cui, Li Wu, Chao Zhang, Zhou Li
wiley   +1 more source

Advancements in Bio‐Integrated Flexible Electronics for Hemodynamic Monitoring in Cardiovascular Healthcare

Advanced Science, EarlyView.
This review explores the cutting‐edge development of bio‐integrated flexible electronics for real‐time hemodynamic monitoring in cardiovascular healthcare. It covers key physiological indicators, innovative sensing mechanisms, and materials considerations. This paper highlights the application of both invasive and non‐invasive devices in cardiovascular
Ke Huang, Zhiqiang Ma, Bee Luan Khoo
wiley   +1 more source